Jump to content
UltiMaker Community of 3D Printing Experts

Strange grinding - goes away if print is not oriented normal to x-y axis.


Recommended Posts

Posted (edited) · Strange grinding - goes away if print is not oriented normal to x-y axis.

I am asking for an acquaintance who has a UM3 Extended.  The issue is that when printing lines that are parallel to the x or y axis, the printer is making a grinding noise.  I am told that re-orienting the print in Cura so that the walls are at an angle (i.e., both x and y motors would be running to print a 45-degree line across the print bed) the grinding goes away.  This makes no sense to me. 


I hope to get to check it out personally, but figured someone here might know what could cause such a condition.


Thanks in advance for any help!


UPDATE:  I went to see the machine in action.  Indeed with even a small change in the alignment of the model the machine prints as smooth and quiet as the day it came out of the box.  Examining and thinking about it a bit more, my current idea is that as the slicer sets (and the hardware attempts to maintain)  a print speed, when nozzle is moving strictly parallel to either x or y axis, the respective motor must move the gantry at the desired speed on it's own.  When, however, the head is moving in both x and y axis, each motor can contribute a lower component velocity according to angle and the "hypotenuse" vector of print head speed.  Therefor the motor has less friction to overcome and would possibly not be as noisy.  The owner of the machine said she contacted Ultimakers support people and they suggest that she disassemble the machine and lubricate the motors.  So that would fit with this assessment that the motors are not able to function at their peak speeds anymore.   The test will be to make a print job that forces slower print speeds but maintains the orientation that is normal to the x-y axis. 

Edited by gdog
new information
  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • UltiMaker Cura 5.3 stable released
        In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!
          • Thanks
          • Like
        • 30 replies
      • Here it is. The new UltiMaker S7
        The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
        So what’s new?
        The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
        The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
        The re-engineered print head has an inductive sensor which reduces noise when probing the build plate. This effectively makes it much harder to not achieve a perfect first layer, improving overall print success. We also reversed the front fan direction (fewer plastic hairs, less maintenance), made the print core door magnets stronger, and add a sensor that helps avoid flooding.

        The UltiMaker S7 also includes quality of life improvements:
        Reliable bed tilt compensation (no more thumbscrews) 2.4 and 5 GHz Wi-Fi A 1080p camera (mounted higher for a better view) Compatibility with 280+ Marketplace materials Compatibility with S5 project files (no reslicing needed) And a whole lot more  
        Curious to see the S7 in action?
        We’re hosting a free tech demo on February 7.
        It will be live and you can ask any questions to our CTO, Miguel Calvo.
        Register here for the Webinar
          • Like
        • 18 replies
      • UltiMaker Cura Alpha 🎄 Tree Support Spotlight 🎄
        Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
        We generated a special version of Cura 5.2 called 5.3.0 Alpha + Xmas. The only changes we introduced compared to UltiMaker Cura 5.2.1 are those which are needed for the new supports. So keep in mind, this is not a sneak peek for Cura 5.3 (there are some really cool new features coming up) but a spotlight release highlighting this new version of tree supports.  
          • Like
        • 22 replies
    • Create New...